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Finding the Fourth Proportional to 843,340.32, 1,265,142 and 274,587.12

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Solution

The fourth proportional to 843,340.32, 1,265,142 and 274,587.12 is: 411,923.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,340.32 : 1,265,142 = 274,587.12 : x
  2. Step 2: Convert to fraction form
    843,340.32/1,265,142 = 274,587.12/x
  3. Step 3: Cross multiply
    843,340.32x = 1,265,142 × 274,587.12
  4. Step 4: Simplify right side
    843,340.32x = 347,391,698,171.04
  5. Step 5: Solve for x
    x = 347,391,698,171.04/843,340.32
  6. Step 6: Final answer
    x = 411,923.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.